Obs ML (4353), 8 Apr 2006: USA 186 & 129, IGS 1B

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Sat Apr 08 2006 - 19:44:53 EDT

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    Obs SatTrackCam Leiden (Cospar 4353), 8 Apr 2006:
    
    28888 05 042A   4353 F 20060408201731100 17 75 1354247+449950 56 I+025 10
    28888 05 042A   4353 F 20060408201741800 17 75 1419410+518310 56 I+025 10
    24680 96 072A   4353 F 20060408211051800 17 75 0504194+599630 56 S+030 10
    27699 03 009B   4353 F 20060408213256100 17 75 0445353+796510 56 S+015 10
    27699 03 009B   4353 F 20060408213306800 17 75 0301036+770810 56 S+015 10
    
    -------------------------------------------------------------------------
    Method: Canon Digital Ixus 400 + ASTRORECORD astrometric software.
    Camera at manual mode, "10 second" (= 10.7 second) exposure, wide field 
    f2.8/7.41 mm.
    
    What these numbers mean:
    http://www.satellite.eu.org/position/IODformat.html
    
    Fine evening. 1 out of 2 attempted images (the one with the two flares) on 
    2005-042A yielded a measurable trail, turns out I got one point (endpoint trail, 
    start was unmeasurable) on USA 129 as well (very early onset of reported flare), 
    and a very crisp bright trail on IGS 1B yielding two points.
    
    Points on both USA 186 and USA 129 agree very well in delta T and cross-track 
    with the latest elsets for these satellites; however the points on IGS 1B are 
    clearly off (0.1 degree) in cross-track compared to elset 06096.85488870 and I 
    believe this is a true deviation, not a measurement error. These points are also 
    some 2 seconds early.
    
    - Marco  :-)
    
    -----
    Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    Leiden, the Netherlands. 52.15412 N,  4.49081 E (WS84), +0 m ASL
    
    SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
    Station (b)log: http://sattrackcam.blogspot.com
    Atom RSS: http://sattrackcam.blogspot.com/atom.xml
    e-mail: sattrackcam@wanadoo.nl
    -----
    
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